diff options
Diffstat (limited to 'arch/s390/kernel/switch_cpu64.S')
| -rw-r--r-- | arch/s390/kernel/switch_cpu64.S | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/arch/s390/kernel/switch_cpu64.S b/arch/s390/kernel/switch_cpu64.S deleted file mode 100644 index 5be3f43898f..00000000000 --- a/arch/s390/kernel/switch_cpu64.S +++ /dev/null @@ -1,53 +0,0 @@ -/* - * 64-bit switch cpu code - * - * Copyright IBM Corp. 2009 - * - */ - -#include <asm/asm-offsets.h> -#include <asm/ptrace.h> - -# smp_switch_to_cpu switches to destination cpu and executes the passed function -# Parameter: %r2 - function to call -# %r3 - function parameter -# %r4 - stack poiner -# %r5 - current cpu -# %r6 - destination cpu - - .section .text - .align 4 - .globl smp_switch_to_cpu -smp_switch_to_cpu: - stmg %r6,%r15,__SF_GPRS(%r15) - lgr %r1,%r15 - aghi %r15,-STACK_FRAME_OVERHEAD - stg %r1,__SF_BACKCHAIN(%r15) - larl %r1,.gprregs - stmg %r0,%r15,0(%r1) -1: sigp %r0,%r6,__SIGP_RESTART /* start destination CPU */ - brc 2,1b /* busy, try again */ -2: sigp %r0,%r5,__SIGP_STOP /* stop current CPU */ - brc 2,2b /* busy, try again */ -3: j 3b - - .globl smp_restart_cpu -smp_restart_cpu: - larl %r1,.gprregs - lmg %r0,%r15,0(%r1) -1: sigp %r0,%r5,__SIGP_SENSE /* Wait for calling CPU */ - brc 10,1b /* busy, accepted (status 0), running */ - tmll %r0,0x40 /* Test if calling CPU is stopped */ - jz 1b - ltgr %r4,%r4 /* New stack ? */ - jz 1f - lgr %r15,%r4 -1: lgr %r14,%r2 /* r14: Function to call */ - lgr %r2,%r3 /* r2 : Parameter for function*/ - basr %r14,%r14 /* Call function */ - - .section .data,"aw",@progbits -.gprregs: - .rept 16 - .quad 0 - .endr |